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Functional Groups

Macromolecules review

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Chapter 4: Carbon and the Molecular Diversity of Life 4 Major Macromolecules: Lipids Carbohydrates Nucleic Acid Protein Lipids Fat- a combination of a glycerol and three fatty acids also called a triglyceride Used for long term energy storage, which is located in the long carbon chains Phospholipid- a combination of a glycerol, two fatty acids and a phosphate group Makes up cell membrane (lipid bilayer) Selectively permeable Hydrophilic heads (the phosphate group) Hydrophobic tails Steroid- lipids with a structure of four fused rings General Information Glycerol is combined to fatty acid by an ester linkage (dehydration synthesis) Ester linkage is polar CH2 groups are nonpolar Saturated Fat- a triglyceride with only single bonds

Bio_160_Lecture1

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Biology 160 Lecture 1 Introduction, Chemistry and Molecules Introductory Concepts for Studying Biology & Science ? Chapter 1 What is science? ? Knowledge gained through careful observation, experimentation and reasoning. ? Science is: ? Explanatory ? Testable ? Reproducible ? Predictive ? Tentative Questions of Science Scientific discoveries create complex questions: ? Ex. Atom ? Should scientists be free to pursue any research? ? Cloning/Stem cell. ? Should government control scientific progress? ? Progression of science. ? Research normally follows a logical progression. ? Interest focuses on problems that impact humanity. The Importance of Publication ? Results of research are submitted for publication. ? peer review by other

lab

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8. Infrared Spectroscopy Infrared (IR) Spectroscopy is an analytical method that measures the absorbance of a select band of electromagnetic radiation by a sample. The wavelength of radiation that is absorbed is characteristic of different types of chemical bonds. The graphical representation of the absorption of the electromagnetic radiation by the sample makes an IR spectrum. Organic chemists use infrared spectroscopy as a means of identifying various functional groups within compounds. This information is used to determine the structure of compounds. IR is usually used in combination with other techniques, especially nuclear magnetic resonance (NMR) spectroscopy. In this class you will learn how to interpret an IR spectrum and how to

CHEM 1A midterm 1

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Chemistry 1A, Fall 2012 Midterm Exam #1 September 19, 2012 (90 min, closed book) Name:__________________________________ SID:___________________________________ GSI Name:________________ Discussion Day/Time: ________________ ? The test consists of 4 short answer questions and 17 multiple choice questions. ? Put your written answers in the boxes provided. Answers outside the boxes may not be considered in grading. ? Write your name on every page of the exam. Question Page Points Score Multiple Choice (1-17) 2-6 51 Ethylene Glycol Short Answer 3 4 Boron Nitride Short Answer 4 4 Allene Short Answer 5 4 Cyanogen Short Answer 5 7 Total 70 Useful Equations and Constants: PV = nRT

Organic Chemistry

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Unit 10All organic compounds contain the element carbon Exist in nature in many forms not all carbon compounds are organic four valence electrons make four single bonds A carbon atom must make 4 covalent bonds to become stable Halocarbons: Nonpoplar molecules/ Insoluble in water (water polar)/ Non-electrolytes (electrolytes dissolve)/ low melting & boiling compared to metals/ Undergo combustion reaction to release energy Prefixes on table P IUPAC: Determine # of carbons in the longest parent chain or carbon backbone Single bonds: ane/ saturated Double bonds: ene/ unsaturated Triple bonds: yne/ unsaturated Isomers: Same formula but structurally different Halocarbon/ Halide Covalently bonded: FL, Cl, Br, I Uses: Refrigerants, anesthetic, and dissolving agents endings: o Alcohol

Hydorcarbons

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ORGANIC CHEMISTRY Hydrocarbons: Alkanes and Cycloalkanes Dr. Geetu Gambhir E-340, Greater Kailash II New Delhi -110048 (31.07.2006) CONTENTS Introduction Alkanes Nomenclature of branched and unbranched Alkanes Condensed Structures Isomerism Classification of Carbon Substitution Sources Preparation Properties Reactions Cycloalkanes Classification Methods of preparation Properties Baeyer?s strain theory Ring strain in Cycloalkanes Reactions 1 Introduction With the key element carbon, organic compounds contain large chemical diversity. They contain wide variety of elements and varisity in the structures. This is due to the unique property of

SAT Chem Orgo

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Carbon and Organic Chemistry Carbon?Three allotropic forms: Diamond, graphite, and amorphous Fullerens?New allotropic form of carbon?Near sperical cages of carbon atoms Diamond?Close-pakced crystal structure that gives a property of extreme hardness Carbon?Bonded to four other carbons in a tetraheral arragement Almost endless number of covalent ponds All bonds in this structure are equally strong, therefore very hard and notriously difficult to melt Diamond?Melting point at 3,550 degrees celsius. Synthetic diamonds can be made by putting carbon to extremely high pressurs and temperature Graphite form is made up of planes of hexagonal structures that are wealkly bonded to the planes above and below?Explains the slippery feeling of graphite

Alkanes

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ORGANIC CHEMISTRY ISU TOPIC: ALKANES Submitted to: Mr. Ram Submitted by: Patrick Do Course Code: SCH4U1 - 02 Date: Thursday February 14, 2013 Alkanes have no functional groups. They are essentially made up of carbon and hydrogen bonded together through single bonds. Alkanes can appear as alkyl groups. The general structure of an alkane is CnH2n+2. a) Straight chain alkanes: Number of Carbons Name of Compound Condensed Formula 1 Methane CH4 2 Ethane CH3 - CH3 3 Propane CH3 - CH2 - CH3 4 Butane CH3 - CH3 - CH3 - CH3 5 Pentane CH3 - CH3 - CH3 - CH3 - CH3 b) Branched alkanes: Number of Carbons Name of Compound Condensed Formula 4 Isobutane (2-methyl propane) CH3 | CH3 - CH - CH3 5 Isopentane

Fill-in-the-Blank Chart Study Guide Ch 4&5

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